HP Presario A900 Compaq Presario A900 Notebook PC - Maintenance and Service Gu - Page 65

USB board, Remove the Phillips PM2.5×5.0 screw

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8. Lift the top cover (2) straight up and remove it. Reverse this procedure to install the top cover. USB board Description USB board (includes USB board cable) Spare part number 462406-001 Before removing the USB board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive on page 44) c. Switch cover and keyboard (see Switch cover and keyboard on page 46) d. Display assembly (see Display assembly on page 50) e. Top cover (see Top cover on page 55) Remove the USB board: 1. Disconnect the USB board cable (1) from the system board. 2. Remove the USB board cable from the clips (2) built into the base enclosure. 3. Remove the Phillips PM2.5×5.0 screw (3) that secures the USB board to the base enclosure. Component replacement procedures 57

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8
.
Lift the top cover
(2)
straight up and remove it.
Reverse this procedure to install the top cover.
USB board
Description
Spare part number
USB board (includes USB board cable)
462406-001
Before removing the USB board, follow these steps:
1
.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2
.
Disconnect all external devices connected to the computer.
3
.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4
.
Remove the battery (see
Battery
on page
34
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive
on page
37
)
b
.
Optical drive (see
Optical drive
on page
44
)
c
.
Switch cover and keyboard (see
Switch cover and keyboard
on page
46
)
d
.
Display assembly (see
Display assembly
on page
50
)
e
.
Top cover (see
Top cover
on page
55
)
Remove the USB board:
1
.
Disconnect the USB board cable
(1)
from the system board.
2
.
Remove the USB board cable from the clips
(2)
built into the base enclosure.
3
.
Remove the Phillips PM2.5×5.0 screw
(3)
that secures the USB board to the base enclosure.
Component replacement procedures
57